traffic是可數名詞還是不可數名詞

　　Traffic雙語例句：

　　We should do something about the traffic problem.

　　我們應當對交通問題進行整頓。

　　There was heavytrafficon theroads

　　道路上車流擁擠。

　　Air traffic had returned to normal.

　　空中交通已恢復正常。

　　Traffic is now flowing smoothly again.

　　現在，交通又暢通了。